/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.pdfbox.contentstream.operator.graphics;

import java.io.IOException;
import java.util.List;

import org.apache.pdfbox.cos.COSBase;
import org.apache.pdfbox.pdmodel.graphics.image.PDImage;
import org.apache.pdfbox.pdmodel.graphics.image.PDInlineImage;
import org.apache.pdfbox.contentstream.PDFGraphicsStreamEngine;
import org.apache.pdfbox.contentstream.operator.Operator;
import org.apache.pdfbox.contentstream.operator.OperatorName;

/**
 * BI Begins an inline image.
 *
 * @author Ben Litchfield
 */
public final class BeginInlineImage extends GraphicsOperatorProcessor
{
    public BeginInlineImage(PDFGraphicsStreamEngine context)
    {
        super(context);
    }

    @Override
    public void process(Operator operator, List<COSBase> operands) throws IOException
    {
        if (operator.getImageData() == null || operator.getImageData().length == 0)
        {
            return;
        }
        PDFGraphicsStreamEngine context = getGraphicsContext();
        PDImage image = new PDInlineImage(operator.getImageParameters(),
                                          operator.getImageData(),
                                          context.getResources());
        // maybe something went wrong when decoding the image data
        if (image.isEmpty())
        {
            return;
        }
        if (!image.isStencil() && !context.isShouldProcessColorOperators())
        {
            return;
        }
        context.drawImage(image);
    }

    @Override
    public String getName()
    {
        return OperatorName.BEGIN_INLINE_IMAGE;
    }
}
